/* Базовые стили */
:root {
    --primary: #009ef7;
    --success: #50cd89;
    --danger: #f1416c;
    --warning: #ffc700;
    --gray-100: #f9f9f9;
    --gray-200: #f1f1f2;
    --gray-300: #e1e3ea;
    --gray-400: #b5b5c3;
    --gray-500: #a1a5b7;
    --gray-600: #7e8299;
    --gray-700: #5e6278;
    --gray-800: #3f4254;
    --gray-900: #181c32;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --transition: all 0.2s ease;
    --bg-color: #ffffff;
    --text-color: var(--gray-900);
    --border-color: var(--gray-200);
    --component-bg: #ffffff;
    --canvas-bg: #ffffff;
    --canvas-grid: var(--gray-200);
}

/* Темная тема */
.dark-theme {
    --bg-color: #1e1e2d;
    --text-color: #e9e9e9;
    --border-color: #2b2b40;
    --component-bg: #1a1a27;
    --canvas-bg: #1a1a27;
    --canvas-grid: #2b2b40;
    --gray-100: #1a1a27;
    --gray-200: #2b2b40;
    --gray-300: #323248;
    --gray-400: #474761;
    --gray-500: #565674;
    --gray-600: #6d6d80;
    --gray-700: #92929f;
    --gray-800: #cdcdde;
    --gray-900: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
}

/* Размеры шрифта */
.font-small {
    font-size: 14px;
}

.font-medium {
    font-size: 16px;
}

.font-large {
    font-size: 18px;
}

/* Общие стили */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Inter, system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
}

/* Контейнер приложения */
.app-container {
    display: grid;
    grid-template-rows: auto auto 1fr auto;
    height: 100vh;
    gap: 1rem;
    padding: 1rem;
}

/* Верхняя панель */
.top-panel {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--component-bg);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.file-controls {
    display: flex;
    gap: 0.5rem;
}

.select-controls {
    display: flex;
    gap: 1rem;
    margin-left: auto;
}

/* Панель настроек проекта */
.settings-panel {
    background: var(--component-bg);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background-color: #f5f5f5;
    border-bottom: 1px solid #ddd;
}

.settings-header h3 {
    margin: 0;
    font-size: 16px;
    color: #333;
}

.settings-header .delete-btn {
    background: none;
    border: none;
    color: #dc3545;
    cursor: pointer;
    padding: 5px;
    margin-left: 10px;
    transition: color 0.2s;
}

.settings-header .delete-btn:hover {
    color: #c82333;
}

.settings-header .fas {
    margin-right: 5px;
}

.btn-icon {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: transparent;
    border: none;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.settings-content {
    padding: 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-height: 500px;
    overflow-y: auto;
    transition: all 0.3s ease-in-out;
    opacity: 1;
    transform: translateY(0);
}

.settings-content.collapsed {
    max-height: 0;
    padding: 0;
    opacity: 0;
    transform: translateY(-10px);
    overflow: hidden;
}

.settings-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.settings-group h4 {
    margin: 0 0 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.setting-item .form-control,
.setting-item .form-select {
    width: 120px;
}

/* Переключатель */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 22px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch label {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--gray-300);
    border-radius: 22px;
    cursor: pointer;
    transition: var(--transition);
}

.toggle-switch label:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    border-radius: 50%;
    transition: var(--transition);
}

.toggle-switch input:checked + label {
    background-color: var(--primary);
}

.toggle-switch input:checked + label:before {
    transform: translateX(18px);
}

/* Основной контент */
.main-content {
    display: grid;
    grid-template-columns: 250px 1fr 250px;
    gap: 1rem;
    min-height: 0;
}

/* Палитра */
.palette-panel {
    background: var(--component-bg);
    border-radius: 0.5rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.palette-header {
    padding: 1rem;
    background: var(--gray-100);
    border-bottom: 1px solid var(--border-color);
}

.palette-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Вертикальные вкладки */
.palette-tabs {
    display: flex;
    flex: 1;
    min-height: 0;
}

.tab-list {
    width: 80px;
    background: var(--gray-100);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem;
}

.tab-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 0.5rem;
    background: transparent;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray-600);
    font-size: 0.75rem;
    text-align: center;
}

.tab-button i {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.tab-button:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.tab-button.active {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.tab-content {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.tab-pane {
    display: none;
    height: 100%;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

.palette-content {
    padding: 1rem;
    overflow-y: auto;
    height: 100%;
}

/* Канвас */
.canvas-container {
    background: var(--canvas-bg);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    position: relative;
    border: 1px solid var(--border-color);
}

.canvas {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: var(--canvas-bg);
    background-image: 
        linear-gradient(var(--canvas-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--canvas-grid) 1px, transparent 1px);
    background-size: 20px 20px;
    overflow: hidden;
}

.flowchart-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    user-select: none;
}

.flowchart-block {
    position: absolute;
    cursor: move;
    user-select: none;
}

.flowchart-block.selected {
    outline: 2px solid var(--primary);
}

.flowchart-block .port {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.flowchart-block:hover .port,
.flowchart-block.selected .port {
    opacity: 1;
    pointer-events: all;
}

.link {
    pointer-events: none;
}

.link-path {
    fill: none;
    stroke: var(--gray-600);
    stroke-width: 2;
    pointer-events: all;
    cursor: pointer;
}

.link.selected .link-path {
    stroke: var(--primary);
    stroke-width: 3;
}

.link-text-group {
    pointer-events: none;
}

.link-text {
    font-size: 12px;
    fill: var(--text-color);
}

.link-text-bg {
    fill: var(--bg-color);
    stroke: var(--border-color);
    stroke-width: 1;
}

/* Панель свойств */
.properties-panel {
    background: var(--component-bg);
    border-radius: 0.5rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.properties-header {
    padding: 1rem;
    background: var(--gray-100);
    border-bottom: 1px solid var(--border-color);
}

.properties-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.properties-header-content h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.properties-header-content h3 i {
    color: var(--gray-600);
    font-size: 1.1rem;
}

.properties-content {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

/* Стили для заголовка и кнопки удаления в панели свойств */
.properties-header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.properties-header-content h4 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.properties-header-content h4 i {
    color: var(--gray-600);
    font-size: 1.1rem;
}

.delete-btn {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--danger);
    border: none;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
}

.delete-btn i {
    font-size: 1rem;
}

/* Анимация для кнопки удаления */
.delete-btn:hover {
    transform: scale(1.1);
    filter: brightness(1.1);
}

.delete-btn:active {
    transform: scale(0.95);
}

/* Панель симуляции */
.simulation-panel {
    background: var(--component-bg);
    border-radius: 0.5rem;
    padding: 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.simulation-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.simulation-progress {
    background: var(--gray-100);
    padding: 1rem;
    border-radius: 0.375rem;
}

.progress {
    height: 0.5rem;
    background-color: var(--gray-200);
    border-radius: 1rem;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    transition: width 0.3s ease;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    color: var(--gray-700);
    font-size: 0.875rem;
}

.progress-info span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.progress-info i {
    color: var(--gray-600);
}

/* Элементы форм */
.form-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-label {
    color: var(--gray-700);
    font-size: 0.875rem;
    font-weight: 500;
}

.form-control {
    display: block;
    width: 100%;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--component-bg);
    background-clip: padding-box;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 158, 247, 0.25);
}

.form-select {
    display: block;
    width: 100%;
    padding: 0.375rem 2rem 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--component-bg);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    appearance: none;
    transition: var(--transition);
}

.form-select:focus {
    border-color: var(--primary);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 158, 247, 0.25);
}

/* Кнопки */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    line-height: 1.5;
    border-radius: 0.375rem;
    transition: var(--transition);
    cursor: pointer;
}

.btn i {
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    filter: brightness(0.9);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    filter: brightness(0.9);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    filter: brightness(0.9);
}

/* Утилиты */
.d-none {
    display: none !important;
}

/* Анимации */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(-10px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Активные состояния */
.block-active {
    z-index: 3;
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.link-active {
    stroke: var(--primary);
    stroke-width: 2px;
}

/* Стили для портов */
.port {
    width: 10px;
    height: 10px;
    background-color: #4CAF50;
    border-radius: 50%;
    position: absolute;
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s;
    z-index: 10;
    pointer-events: none;
}

/* Отображение портов при выделении блока */
.block.selected .port {
    opacity: 1;
    pointer-events: all;
}

.port:hover {
    background-color: #45a049;
    transform: scale(1.2);
}

.port-in {
    background-color: #2196F3;
}

.port-out {
    background-color: #FF5722;
}

/* Отображение портов при соединении */
.connecting .port {
    opacity: 1;
    pointer-events: all;
}

/* Стили для элементов на панели */
.elements-container {
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-top: 10px;
}

.elements-tabs {
    display: flex;
    border-bottom: 1px solid #ddd;
}

.elements-tab-button {
    padding: 8px 15px;
    cursor: pointer;
    background-color: #f8f8f8;
    border: none;
    outline: none;
}

.elements-tab-button.active {
    background-color: #fff;
    border-bottom: 2px solid #4CAF50;
}

.elements-list {
    padding: 10px;
    max-height: 300px;
    overflow-y: auto;
}

.element-item {
    display: flex;
    align-items: center;
    padding: 8px;
    margin-bottom: 5px;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.element-item:hover {
    background-color: #f0f0f0;
}

.element-item.selected {
    background-color: #e0f2f1;
    border-left: 3px solid #4CAF50;
}

.element-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    color: #555;
}

.element-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.no-elements {
    padding: 15px;
    text-align: center;
    color: #888;
    font-style: italic;
}

/* Стили для скроллбара */
.elements-content::-webkit-scrollbar {
    width: 6px;
}

.elements-content::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.elements-content::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

.elements-content::-webkit-scrollbar-thumb:hover {
    background: #999;
}

/* Контейнер для портов */
.ports-container {
    position: absolute;
    width: 100%;
    height: 100%;
    /* ВАЖНО: контейнер должен принимать события, иначе порты визуально видны,
       но не всегда кликабельны (в зависимости от браузера/оверлеев). */
    pointer-events: auto;
    top: 0;
    left: 0;
    z-index: 10;
}

/* Стили для элементов в панели элементов */
.elements-container {
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: #f8f9fa;
    border-left: 1px solid #dee2e6;
    box-shadow: -2px 0 5px rgba(0, 0, 0, 0.05);
}

.elements-header {
    padding: 10px 15px;
    border-bottom: 1px solid #dee2e6;
    background-color: #f1f3f5;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.elements-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #495057;
}

.elements-tabs {
    display: flex;
    border-bottom: 1px solid #dee2e6;
}

.elements-tab-button {
    padding: 8px 15px;
    background-color: transparent;
    border: none;
    cursor: pointer;
    font-size: 14px;
    color: #6c757d;
    transition: all 0.2s ease;
}

.elements-tab-button.active {
    color: #007bff;
    border-bottom: 2px solid #007bff;
    font-weight: 500;
}

.elements-tab-button:hover:not(.active) {
    color: #495057;
    background-color: #f1f3f5;
}

.elements-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.element-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    margin-bottom: 5px;
    background-color: #fff;
    border-radius: 4px;
    border: 1px solid #e9ecef;
    cursor: pointer;
    transition: all 0.2s ease;
}

.element-item:hover {
    background-color: #f1f3f5;
    border-color: #ced4da;
}

.element-item.selected {
    background-color: #e7f5ff;
    border-color: #a5d8ff;
}

.element-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    color: #6c757d;
}

.element-title {
    font-size: 14px;
    color: #495057;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.no-elements {
    padding: 20px;
    text-align: center;
    color: #adb5bd;
    font-style: italic;
}

/* Стили для портов, отображаемых только при выделении блока */
.port {
    width: 10px;
    height: 10px;
    background-color: #4CAF50;
    border-radius: 50%;
    position: absolute;
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s ease;
    pointer-events: none;
    z-index: 2;
}

.block.selected .port {
    opacity: 1;
    pointer-events: auto;
}

.port:hover {
    background-color: #2196F3;
    transform: scale(1.2);
}

.port-in {
    background-color: #2196F3;
}

.port-out {
    background-color: #FF5722;
}

.connecting .port {
    opacity: 1;
    pointer-events: auto;
}